App Detail » Smart Biorhythms

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App Description

Checking your biorhythms FAST, CLEAR and of MORE INFORMATION!

Known as PEI cycles are short for Physical, Emotional and Intellectual cycles—the long term biorhythms in human body. Currently, the three biorhythms cycles are displayed by three fluctuating curves.

Now we put PEI cycles on a clock face by converting the three curves into THREE NEEDLES.

In comparison with the traditional curves, the semicircle above the horizontal middle line matches the first half of the curves, the so-called “discharge” period,

and the semicircle below the horizontal middle line matches the second half of the curves, the “recharge” period;

also there are correspondingly two “critical” days when the middle line cuts across the circle, one at the start day of a cycle, the other at the half way of the cycle.

And same as in the traditional curves, the red color represents the Physical; the green for the Emotional; and the blue for the Intellectual.


In spite of the display, everything else is according to the Biorhythms theory. However, as a result, the clock-display just makes reading more visual and meaningful to users.

For example, you may watch three needles as if they chase each other, and so you can point out: which one is in a lead to another to the peak, or which two are going to meet soon.

So, it is easy to use DYNAMICALLY to monitor and predict your states, while the app provides reports around those key days.



This software also has a creative and unique feature that it provides curious users a possibility that they can change the cycles a bit longer or shorter to adapt to their observation. Each cycle has -5 to +5 adjustable days for the change.

However, if you are interested to trace some mystery cycles, this app will be easy and helpful for you.

App Changes

• November 13, 2013 Initial release
• August 11, 2014 New version 2.0
• August 12, 2014 Price decrease: $0.99 -> FREE!
• November 10, 2014 New version 2.1.0
• November 19, 2014 New version 2.2.0
• June 14, 2019 New version 2.4.1
• June 15, 2019 Price increase: FREE! -> $0.99
• June 24, 2019 Price increase: FREE! -> $0.99
• November 12, 2020 Price increase: $0.99 -> $1.99
• August 06, 2021 Price decrease: $1.99 -> $0.99